Fuel-mixing device for internal-combustion engines.



G. B. HATFIELD. FUEL MIXING DEVICE FOR INTERNAL COMBUSTION ENGINES:

APPLICATION FILED JANL'I, 1914.

Patented Mar. 2, 1915.

2 8HEHTS-SHEET 1.

EEEEEEEEE 7////////// /ll/lll O. B. HATFIELD.

FUEL MIXING DEVICE FOR. INTERN L COMBUSTION ENGINES. APPLICATION FILED JAN. 7,1914

1,130,278, Patented Mar. 2, 1915.

2 SHEETS-SHEET 2.

7 1- @Zwlv v A? awmws,

turi tube branch of the mixer, and before the fuel and air entering through the Venturi tube is combined with the air entering through the other branch of the conduit. This result is effected by a multiplicity of relatively fine resilient ballle rods or wires M, located radially in the Venturi tube branch of the conduit above the fuel nozzle. The nebulizing effect is furthermore augmented and particles which might have escaped the action or" the vibratory balile wires in the Venturi tube are caught by a secondary system of such wires located in the main portion of the conduit and preferably immediately in front and rear of the throttle valve. As shown in Figs. 1. 3 and l, a multiplicity of these relatively tine resilient bat fie rods or wires arc-located at N and N, one body of them being located in front of and the other in rear of the throttle valve.

In all cases the resilient and vibratory ballle wires are supported rigidly at one end only and project radially into the conduit or branch of the conduit as the case may be, preferably in staggered relation so that little or no opportunity is afforded for any of the fuel to pass the same without striking the wires and, by the vibratory action and impact being split upinto the finest subdivisions.

As a convenient and important feature of the construction the vibratory baiile wires are mounted in annular carriers which made to lit the portion of the device which is to support the same; thus, as shown in Fig. 1, the balile wires M are mounted in an annulusm, which in turn is mounted on the valve stem K, and consequently the battle wires may all be assembled on their annulus and attached to the valve stem in the most convenient manner. In the case of the baitfie wires N and N they are mounted in their supportine annuli a. and n. which latter are adapted to fit in the conduit and be held therein by set screws 0 or shoulders O, as desired.

By mounting the vibratory bafllc wires on annular supports which are subsequently placed in position in the mixer, it is obvious that av very great advantage results, both in the convenience of manufacture and in the ability of the workmen to locate and position the ballle wires with accuracy. as well. as to fasten them securely in place without destroying the temperature of the material which might, to a certain extent interfere with the vibratory action. The batlie wires so called, it will be understood. are into vibratory action by the flow of air past and around the same, and they are preferably of different lengths, thus insuring an active vibratory action with the air flowing at different speeds. The rate of vibration, it is believed, should be as high as it is consistout with a range of movement which will project the disrupted particles away from the wires so that there will be no tendency of the liquid fuel to adhere and be conducted to the Walls of the conduit. In fact it is demonstrable that a wire supported at one end and tree at the other end, when set in vibratory motion, will cause any liquid material striking the same to tend to move toward the free end of the wire, and this action in the present apparatus results in all of the liquid fuel being thrown oil of the wires and projected in disrupted condition into the body of air traveling between thewires. The resultis a most thorough homog enizing of the mixture as well as a nebulizing of the lliquid fuel, so that practically none of the particles remain in a globular form which will separate out by gravity or by centrifugal action in passing to the engine cylinder or while Within the cylinder under the influence of the piston action.

Havin thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is,-

1.111 a fuel mixer for internal combustion engines, the combination with the conduit through which themixture is conducted to the engine having two air entrance branches, and means for supplying liquid fuel to one of said branches, of a multiplicity of fine vibratory ballle rods located in said last mentioned branch for nebulizing the liquid fuel supplied thereto before the same is combined with the air entering through the other branch.

In a fuel mixer for internal combustion engines, the combination with the conduit through which the mixture is conducted to the engine and a. liquid fuel nozzle opening into said conduit, of a valve for said nozzle having its stem extending into the conduit anda multiplicity of vibratory ba-ilie rods mounted on said stern and projecting into the conduit in position to nebulize the liquid fuel supplied by the nozzle.

3. In a fuel mixer for internal combustion engines, the combination with the conduit through which the mirture is conducted to the engine, of a separate annulus mounted in said conduit and a multiplicity of radially arranged vibratory rods fiXed at one end said annulus whereby the rods and annulus may be formed complete and subsequently positioned in the conduit.

4. In fuel mixer for internal combustion engines, the "combination with the conduit through which the mixture is conducted to the engine having two air entrance branches, one oi: said branches being in the form of a Venturi tube, a liquid fuel nozzle located at the constricted portion of said tube, and a multiplicity of vibratory baliie rods mounted in said Venturi tube. branch of the conduit above the liquid fuel nozzle and in position to nebulize the fuel passing from said 

